Online HelpPC 2.10      Quick Reference Utility     Copyright 1991 David Jurgens

 
                               DEC - Decrement                               
                                                                                
                                                                                
        Usage:  DEC     dest                                                    
        Modifies flags: AF OF PF SF ZF                                          
                                                                                
                                                                                
        Unsigned binary subtraction of one from the destination.                
                                                                                
                                                                                
                                 Clocks                 Size                    
        Operands         808x  286   386   486          Bytes                   
                                                                                
        reg8              3     2     2     1             2                     
        mem             15+EA   7     6     3            2-4                    
        reg16/32          3     2     2     1             1                     
                                                                                
                                                                                
        - see Instruction Timing                                                
                                                                                
                                                                                
 

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